Hotel call-bell.



K. KAWANO & R. NISHIMOTO.

'HOTEL GAL'L BELL. AP PLIOATION IILEI) APB.."3, 1914.

1,125,851. Patented Jan. 19, 1915.

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HOTEL CALL BELL.

APPLICATION FILED APR.23, 1914.

1,125,851. Patented Jan. 19, 1915.

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W new 421M770 M 6 313m 9 fixed/142M050 KOICHI KAWANO AND RISAKU NISHIMOTO, OF SEATTLE, WASHINGTON.

HOTEL CALL-BELL.

Specification of Letters Patent.

Patented J an. 19, 1915.

Application filed April 28, 1914. Serial NQ.B33,826.

To aZZ whom it may concern:

Be it known that we, Kolcnr KAWANO and Rrsann NIsHnIoTo, subjects of the Emperor of Japan, residing at Seattle, in the county of Kingand State of Washington, have invented certain new and useful Improvements in Hotel Call-Bells, of which the following is a specification.

This invention relates to an electric alarm system for use in hotels for awakening or calling guests in the various rooms at predetermined times.

The object of theinvention is the perfecting of devices of this character to furnish a better and more reliable call-bell system than hitherto.

The invention consists in the novel con-- struction, adaptation and combination of devices, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a view in front elevation. and shown somewhat diagrammatically, of a call-system embodying the present invention. Fig. 2 is a section taken on line 22 of Fig. 1. Fig. 3

is a detail face view of the commutator shown detached.

The referenceletters A, B and C represent electric call-bells which are located in separate guest-rooms of a hotel and are connected to circuit wires a, b and c and also with circuit wires a, b and c which are joined, as indicated, to a wire 03 including a battery D. The aforesaid circuit wires are provided with terminals a 71 and c in the form of plugs which protrude through coupling blocks 70 as shown at the right of Fig. 1. Said blocks are of a suitable non-conducting material and. in consequence, the various circuits as so far explained are incomplete. lVe provide, however, a normally open switch. such as the so-called push-button. represented by E. E and E for each of the various circuits so that the latter may. if desired. be manually closed to operate the respective call-bells. Said plugs or tenni nals a. b and c serve as connectors with pairs of bus-rods, as f and f, f and f etc.. which extend into a switch-board G provided with series of sockets as g. 7 and g to receive said plugs and connect the same with selected pairs of the bus-rods. The latter are connected by wires h, 7t, it, etc. with metal rods J, J J etc, extending through an annular non-conductor M and arranged H1 a circle, and constitutes a commutator having, preferably, twenty-four contact elements as shown in Fig. 3.

The apparatus is actuated and controlled by clock-work which is inclosedin a casing l secured to the wall in the hotel ofiice or other convenient place. The clock-work may be of any usual or suitable type, but only such parts thereof are illustrated as are deemed requisite for an understanding of the invention.

Disposed axially of said commutator is a st 2 carrying near its outer end a finger i ounted for independent rotary motion upon said post is a toothed gear wheel 4 in, contmuous mesh with an intermediate gear a which is driven from a gear-wheel 6 which is fixedly secured to the arbor 7 carrying the hour-hand 8 of the clock; the hour-hand revolving once every twelve hours and to correspondingly drive the wheel 4 the latter and the wheel 6 are of equal diameters.

Attached to the rear of the gear-wheel 4 is the end of an arm 9, of resilient or spring metal. carrying at its other end a conical block 10 which serves as a contact closer be tween the successive elements J. J etc.

J uxtaposed with the front of wheel 4 is a crown-cam 11 which is characterized by having upon its outer edge a wiping surface with a portion 12 parallel with the plane of the adiacent face of the wheel 4 and at one side of the cam is provided a recess to afford an inclined surface 13 which extends from the inner end of a shoulder 14 to the plane of the portion 12.

The cam 11 is prevented from rotating by means of a hook 15 engaging in a hole provided in the cam and connected to a link 16 by a pivotal pin 17 to accommodate itself to the axial movements of the cam.

18 represents a helical spring positioned to the rear of gear-wheel 4. and serves to urge the cam against the finger 3. The finger 3 is revolved a number of times at halfhour intervals. To such end, the post.2 has fixedly secured thereto a pinion 19 which is rotated from a gear-wheel 20 upon an arbor 21 driven by a spring provided in the barrel 22. The gear-wheel 20 is provided at diametrically opposite sides with relatively deep gullets 23 and 23 and constitutes an escapement wheel. The number of teeth in the escapement wheel circumferentially upon each side and between said gullets is equal to a multiple of the teeth in the pinion 1.) as, for instance, three times.

A gear-wheel "2 is mounted on the post. 2 to drive a spindle 23 through the medium of a pinion .26 which is mounted on the spindle. The latter also carries a regulator wheel 27 having in its periphery two recesses 28 and 28 to receive a hooked detent 29 extending from an oscillatory shaft 50..

Said detent is normally held by a spring 31 against the regulator wheel to engage in a recess in the latter. The deteut is, inoreover, periodically withdrawn from a recess of the regulator wheel by means of an arm 32 engaging therewith and which is carried by a shaft 32 having another arm 33 which is intermittently engaged by spurs 34: and 34 extending from diametrically opposite sides of a shaft 35 which is rotated by the clock-work once every hour as, for example, the arbor of the minutehand 36. v

The oscillatory shaft 30 also carries a pallet 37 adapted to arrest the rotation of the escapement wheel 20 when either of the gullets thereof are brought into position to receive the pallet which is shoved therein through the agency of the spring 31. \Vhen the pallet enters a 'gullct, the shaft 30 is sufiicicntly rotated to allow the detent 99 to enter one of the recesses of the regulator-wheel whereupon the latter is locked.

l/Vhen a spur, 3i or 34. engages the arm 33, the shaft 32 is turned to cause the arm 32 to push the detent from the regulator wheel thereby releasing the same coincidentally with the withdrawal of the pallet ,from the escapement wheel. resulting'in the latter being rotated by the driving spring to actuate the post which affords motion to the regulator wheel and also to the finger 3.

The operation of the invention is as follows: The gear-wheel 4 being rotated each twelve hours. will correspondingly carry the contact closer in an orbitalpath progressively over the contacts .J, J J etc. At half-hour occurrences and through the instrumentality of a spur 3% or M, the arms 32 and 33 are influenced to swerve the detent 29 from its engagement with the regulator wheel 97 and likewise affect the pallet 37 in its relations to the escapement wheel 20. When the latter is thus disengaged by its pallet. the driving spring Within barrel 22 will cause the escapement wheel to make one-half of a rotation when the wheel is reengaged by the pallet. The gear-teeth of said escapement wheel. when operating, will produce three rotationsin rapid succession to the post 2, resulting in the finger 3, in traversing the wiping-face of the cam 11, pushing rearwardly the latter accompanied by gear-wheel 4 in opposition to the spring 18 when mounting the inclined portion 13 of the cam-face, and retain the cam and the gear-wheel in such rearinost position until the shoulder ll of the cam passes the finger in each rotation. .\s the shoulder passes the finger. the spring 18 asserts its power to push the gear-wheel l and the cam outwardly. By reason of the contact closer 10 being attached to the gear-wheel it will be moved axially of the latter into and out of contact with the adjacent rods 0: terminals, as J and J for example, at approximately eight oclock. When the closer is, thus vbrought into contact with the referred. to

rods, the plugs of any of the call-bell circuits which are inserted in the sockets, as g and 9 of the bus-rods which are connected with the rods J and J such circuit or circuits will be closed and opened three times to have connected call bells intermittently ring. The plugs would be placed in the appropriate sockets to have the bells rung at times directed by the guests.

\Vhat we claim. is-

l. The combination with a plurality of electric bells, normally incomplete circuits therefor, an electrical switch, clock-work fonperiod'ically rotating said switch, and a spring acting to retain said switch in open position with respect to the terminals of the aforesaid circuits. of a cam, and means actuated by said clock-work and cooperating with said cam for effecting axial movements to'said switch whereby the latter is actuated at periods to successively close the gaps between the circuit terminals.

2. The combination with a plurality of electric bells, normally incomplete circuits therefor, an electric switch, and a spring tending to maintain said switch in-open position with respect to the terminals of the aforesaid circuits. of clock-work for perodically rotating said switch, and means actuated by said clock-work for periodically actuating said switch with respect to the terminals'of each of said circuits.

3. The combination with a plurality of electric bells,normally incomplete circuits therefor, and clock-work, of a rotary device having axial movement in operative engagement with said clock-work, an electrical switch carried by said device, electrical conductors, means provided on the aforesaid incomplete circuits to couple the same with selected ones of said conductors, and means actuated by said clock-work to effect the axial movement of said rotary device so as to cause the switch to be influenced at periods to repeatedly close the circuits when the latter are coupled with the respective conductors.

4. The combination with a plurality of electric bells, normally incomplete circuits therefor, and clock-work, of a rotary device having axial movementin operative engagenient with said clock-work. an electrical switch carried by said device, electrical conductors, means provided on the aforesaid incomplete circuits to couple the same with selected ones of said conductors. and means actuated by said cloclc-worlc to actuate said rotary device so as to cause the switch to be influenced to successively close the circuits when the latter are coupled with the respec tive conductors.

The combination with electric bells. normally a plurality of incomplete circuits therefor. conductors arranged in pairs and adapted to be interchangeably employed as extensions to the. wires of said circuits, an 

